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Proceedings Paper

A carrier tracking technique based on a convex combination of two adaptive filters for EDL
Author(s): Shengbo Hu; Xiujuan Yao; Na Zhao
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Paper Abstract

For planetary lander missions, the most challenging phase of the spacecraft-to-ground communications is during the entry, descent, and landing (EDL). Due to the EDL events, the extreme acceleration and jerk cause extreme Doppler dynamics on the signals received on Earth. In order to support spacecraft-to-earth communications during the EDL phase, we develop a robust and low complexity carrier frequency estimation and tracking technique that is able to operate under low SNR and highly non-stationary conditions, common to the adverse EDL scenario. The method comprises two adaptive filters supervised by a convex combiner. By simulating, it is shown that the investigated convex combination of individual adaptive predictors is able to outperform the best individual predictor.

Paper Details

Date Published: 10 November 2007
PDF: 6 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 67954Y (10 November 2007); doi: 10.1117/12.775004
Show Author Affiliations
Shengbo Hu, Ctr. for Space Science and Applied Research (China)
Xiujuan Yao, Ctr. for Space Science and Applied Research (China)
Na Zhao, Ctr. for Space Science and Applied Research (China)


Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology

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